Unit 5: Nuclear Chemistry

If you can do all the things listed below, you are ready for the Unit 5 test.

Place a checkmark next to each item that you can do! If a sample problem is given, complete it as evidence.

_____1. I can still do everything from Unit 1.
_____2. I can still do everything from Unit 2.
_____3. I can still do everything from Unit 3.
_____4. I can still do everything from Unit 4.
_____5. I can compare types of radiation in terms of symbol, mass number, charge, penetrating power, shielding required, and biological hazard.	Type Symbol Mass # Charge Penetrating Power Shielding Required Bio Hazard alpha  4 2 very low paper, clothing none unless inhaled beta   0 -1 low metal foil eyes & skin gamma  0 0 very high concrete & lead whole body neutron 1 0n 1 0 very high water; lead whole body positron + 0 +1 low metal foil eyes & skin
_____6. I can identify the three types of nuclear reactions.	The three types of nuclear reactions are: a. fission b. fusion c. transmutation
_____7. I can define transmutation, fission, and fusion.	Definitions: transmutation – process of changing one element into another; may be natural or artificial fission – process of splitting apart a large atom (usually U of Pu) into two roughly equal size pieces by hitting it with a neutron fusion – process of putting small nuclei (usually H) together to form a larger nucleus (He)
_____8. I can state two synonyms for spontaneous decay.	Two synonyms for spontaneous decay are:____natural decay_____ and __natural transmutation__.
_____9. I can show how mass number and electrical charge must be conserved in any nuclear reaction.	0 -1 e Complete the following nuclear equation: ________
_____10. I can explain what makes a nucleus stable or unstable.	The stability of the nucleus is dependent on the ___proton___ to _____neutron______ ratio.
_____11. I can explain the difference between natural transmutation and artificial transmutation.	The difference between natural transmutation and artificial transmutation is that in natural transmutation an_unstable_ __nucleus___breaks apart on its own and in artificial transmutation a __stable______ __nucleus____ is made ____unstable______ by hitting it with a high energy particle (such as a proton, neutron, or gamma radiation).
_____12. I can identify a natural decay reaction from a list of reactions.	Which equation represents a natural decay?
_____13. I can identify an artificial transmutation reaction from a list of reactions.	Which equation represents artificial transmutation?
_____14. I can identify a fission reaction from a list of reactions.	Which equation represents fission?